Sample WxWidgets 3.0.3 Hello World application

wxHelloWorld.cpp

#include <wx/app.h>
#include <wx/frame.h>
#include <wx/menu.h>
#include <wx/msgdlg.h>
#include <wx/log.h>

enum
{
    ID_Hello = 1
};

class MyFrame : public wxFrame
{
public:
    MyFrame()
        : wxFrame(nullptr, wxID_ANY, "Hello, World!")
    {
        wxMenu *menuFile = new wxMenu;
        menuFile->Append(ID_Hello, "&Hello...\tCtrl-H",
            "Help string shown in status bar for this menu item");
        menuFile->AppendSeparator();
        menuFile->Append(wxID_EXIT);
        wxMenu *menuHelp = new wxMenu;
        menuHelp->Append(wxID_ABOUT);
        wxMenuBar *menuBar = new wxMenuBar;
        menuBar->Append(menuFile, "&File");
        menuBar->Append(menuHelp, "&Help");
        SetMenuBar(menuBar);
        CreateStatusBar();
        SetStatusText("Welcome to wxWidgets!");

        this->Bind(wxEVT_MENU,
            [](wxCommandEvent& event)
            {
                wxLogMessage("Hello from wxWidgets!");
            }, ID_Hello);

        this->Bind(wxEVT_MENU,
            [](wxCommandEvent& event)
            {
                wxMessageBox("This is a wxWidgets' Hello world sample",
                    "About Hello World", wxOK | wxICON_INFORMATION);
            }, wxID_ABOUT);
        this->Bind(wxEVT_MENU, 
            [=](wxCommandEvent& event) 
            {
                this->Close(true);
            }, wxID_EXIT);

    }
};

class MyApp : public wxApp
{
public:
    
    virtual bool OnInit() override
    {
        MyFrame* frame = new MyFrame();
        frame->Show(true);
        return true;
    }

};

wxIMPLEMENT_APP(MyApp);